1 files changed, 0 insertions, 128 deletions
diff --git a/lib/liboqs/src/kem/kyber/pqcrystals-kyber_kyber512_ref/cbd.c b/lib/liboqs/src/kem/kyber/pqcrystals-kyber_kyber512_ref/cbd.c
deleted file mode 100644
index 1500ffea5..000000000
--- a/lib/liboqs/src/kem/kyber/pqcrystals-kyber_kyber512_ref/cbd.c
+++ /dev/null
@@ -1,128 +0,0 @@
-#include <stdint.h>
-#include "params.h"
-#include "cbd.h"
-
-/*************************************************
-* Name:        load32_littleendian
-*
-* Description: load 4 bytes into a 32-bit integer
-*              in little-endian order
-*
-* Arguments:   - const uint8_t *x: pointer to input byte array
-*
-* Returns 32-bit unsigned integer loaded from x
-**************************************************/
-static uint32_t load32_littleendian(const uint8_t x[4])
-{
-  uint32_t r;
-  r  = (uint32_t)x[0];
-  r |= (uint32_t)x[1] << 8;
-  r |= (uint32_t)x[2] << 16;
-  r |= (uint32_t)x[3] << 24;
-  return r;
-}
-
-/*************************************************
-* Name:        load24_littleendian
-*
-* Description: load 3 bytes into a 32-bit integer
-*              in little-endian order.
-*              This function is only needed for Kyber-512
-*
-* Arguments:   - const uint8_t *x: pointer to input byte array
-*
-* Returns 32-bit unsigned integer loaded from x (most significant byte is zero)
-**************************************************/
-#if KYBER_ETA1 == 3
-static uint32_t load24_littleendian(const uint8_t x[3])
-{
-  uint32_t r;
-  r  = (uint32_t)x[0];
-  r |= (uint32_t)x[1] << 8;
-  r |= (uint32_t)x[2] << 16;
-  return r;
-}
-#endif
-
-
-/*************************************************
-* Name:        cbd2
-*
-* Description: Given an array of uniformly random bytes, compute
-*              polynomial with coefficients distributed according to
-*              a centered binomial distribution with parameter eta=2
-*
-* Arguments:   - poly *r: pointer to output polynomial
-*              - const uint8_t *buf: pointer to input byte array
-**************************************************/
-static void cbd2(poly *r, const uint8_t buf[2*KYBER_N/4])
-{
-  unsigned int i,j;
-  uint32_t t,d;
-  int16_t a,b;
-
-  for(i=0;i<KYBER_N/8;i++) {
-    t  = load32_littleendian(buf+4*i);
-    d  = t & 0x55555555;
-    d += (t>>1) & 0x55555555;
-
-    for(j=0;j<8;j++) {
-      a = (d >> (4*j+0)) & 0x3;
-      b = (d >> (4*j+2)) & 0x3;
-      r->coeffs[8*i+j] = a - b;
-    }
-  }
-}
-
-/*************************************************
-* Name:        cbd3
-*
-* Description: Given an array of uniformly random bytes, compute
-*              polynomial with coefficients distributed according to
-*              a centered binomial distribution with parameter eta=3.
-*              This function is only needed for Kyber-512
-*
-* Arguments:   - poly *r: pointer to output polynomial
-*              - const uint8_t *buf: pointer to input byte array
-**************************************************/
-#if KYBER_ETA1 == 3
-static void cbd3(poly *r, const uint8_t buf[3*KYBER_N/4])
-{
-  unsigned int i,j;
-  uint32_t t,d;
-  int16_t a,b;
-
-  for(i=0;i<KYBER_N/4;i++) {
-    t  = load24_littleendian(buf+3*i);
-    d  = t & 0x00249249;
-    d += (t>>1) & 0x00249249;
-    d += (t>>2) & 0x00249249;
-
-    for(j=0;j<4;j++) {
-      a = (d >> (6*j+0)) & 0x7;
-      b = (d >> (6*j+3)) & 0x7;
-      r->coeffs[4*i+j] = a - b;
-    }
-  }
-}
-#endif
-
-void poly_cbd_eta1(poly *r, const uint8_t buf[KYBER_ETA1*KYBER_N/4])
-{
-#if KYBER_ETA1 == 2
-  cbd2(r, buf);
-#elif KYBER_ETA1 == 3
-  cbd3(r, buf);
-#else
-#error "This implementation requires eta1 in {2,3}"
-#endif
-}
-
-void poly_cbd_eta2(poly *r, const uint8_t buf[KYBER_ETA2*KYBER_N/4])
-{
-#if KYBER_ETA2 == 2
-  cbd2(r, buf);
-#else
-#error "This implementation requires eta2 = 2"
-#endif
-}